Cannot compile a customized sysimg with julia 0.7

[ronisbr]

Hi guys!

I am trying to compile a customized sysimg with julia 0.7 but I am getting an error. I am just trying to recompile the image (nothing on usrimg.jl) and, when I try to load it, I see:

ERROR: System image file failed consistency check: maybe opened the wrong version?

This is happening on macOS and Linux using the nightly build available on the website. In discourse, another person also saw this problem:

https://discourse.julialang.org/t/error-rebuilding-julia-v0-7-sysimg-in-macos/10876/2

[fredrikekre]

I am just trying to recompile the image

How are you doing this?

[ronisbr]

I am using this command:

julia ./build_sysimg.jl /home/ronan.arraes/tmp/ core2 --force

In this case, julia is the v0.7 and I am at the share/julia/ directory. The same command works perfectly in v0.6.

[baggepinnen]

I see the same in fedora on nightly using the function to build sysimage from the Julia REPL, I also have the same procedure working on 0.6

[ViralBShah]

Maybe try with a fresh build once 0.7-alpha is tagged.

[ronisbr]

@ViralBShah

I have just tried with 0.7-alpha and got the same results. The steps to reproduce on macOS are:

$ cd /Applications/Julia-0.7.app/Contents/Resources/julia/share/julia/
$ touch userimg.jl
$ ../../bin/julia build_sysimg.jl /tmp/sys core2 userimg.jl --force
$ ../../bin/julia -J /tmp/sys.dylib
ERROR: System image file failed consistency check: maybe opened the wrong version?

[ronisbr]

While this is not fixed, a workaround to test custom builds of the sysimg is to load the .ji file. However, it will be very slow, but it will work for small tests.

[SimonDanisch]

will be fixed by: #27629

[ronisbr]

@SimonDanisch @staticfloat

My problems are indeed fixed by this PR.

[staticfloat]

I think that the recommended method is to just use PackageCompiler.jl for this. We should probably remove the contrib/build_sysimg.jl completely.

[omus]

contrib/build_sysimg.jl was removed in #30225